/* yzz
 * WGS84转换到高德地图的GCJ02
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 * and open the template in the editor.
 */

var WGS84_to_GCJ02 = function () {};
WGS84_to_GCJ02.prototype.a = 6378245.0;
WGS84_to_GCJ02.prototype.ee = 0.00669342162296594323;

WGS84_to_GCJ02.prototype.transform = function (wgLat, wgLon) {
    if (this.outOfChina(wgLat, wgLon)) {
        return[wgLat, wgLon];
    }
    dLat = this.transformLat(wgLon - 105.0, wgLat - 35.0);
    dLon = this.transformLon(wgLon - 105.0, wgLat - 35.0);
    radLat = wgLat / 180 * Math.PI;
    magic = Math.sin(radLat);
    magic = 1 - this.ee * magic * magic;
    sqrtMagic = Math.sqrt(magic);
    dLat = (dLat * 180) / ((this.a * (1 - this.ee)) / (magic * sqrtMagic) * Math.PI);
    dLon = (dLon * 180) / (this.a / sqrtMagic * Math.cos(radLat) * Math.PI);
    mgLat = wgLat + dLat;
    mgLon = wgLon + dLon;
    return[mgLat, mgLon];
};
WGS84_to_GCJ02.prototype.outOfChina = function (lat, lon) {
    if (lon < 72.004 || lon > 137.8437)
        return true;
    if (lat < 0.8293 || lat > 55.8271)
        return true;

    return false;
};
WGS84_to_GCJ02.prototype.transformLat = function (x, y) {
    var ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
    ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
    ret += (20.0 * Math.sin(y * Math.PI) + 40.0 * Math.sin(y / 3.0 * Math.PI)) * 2.0 / 3.0;
    ret += (160.0 * Math.sin(y / 12.0 * Math.PI) + 320 * Math.sin(y * Math.PI / 30.0)) * 2.0 / 3.0;
    return ret;
};
WGS84_to_GCJ02.prototype.transformLon = function (x, y) {
    var ret = 300.0 + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
    ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20.0 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
    ret += (20.0 * Math.sin(x * Math.PI) + 40.0 * Math.sin(x / 3.0 * Math.PI)) * 2.0 / 3.0;
    ret += (150.0 * Math.sin(x / 12.0 * Math.PI) + 300.0 * Math.sin(x / 30.0 * Math.PI)) * 2.0 / 3.0;
    return ret;
};

var t = [];
t = new WGS84_to_GCJ02().transform(31.283814, 121.502191);
var u = t;
